The Canadian Central
Mortgage and Housing Corporation produced many model house design plans.
This is their 1965 small house design catalogue. See also the supplement for this year.
Downloaded from ftp://ftp.cmhc-schl.gc.ca/chic-ccdh/HousePlans/CA1%20MH%2065S53-W.pdf
There are many more related design documents here: ftp://ftp.cmhc-schl.gc.ca/chic-ccdh/HousePlans/